Verification Layer For AI Agents

Start free. Pay for monitored evidence.

Ground Truth gives AI agents a free first live check, then paid monitor history for claims that should not go stale. Use saved monitors, scheduled checks, change reports, and team API keys to track pricing pages, endpoints, packages, trust pages, and vendor claims over time.

Free

Free tier includes limited monthly checks plus 5 claim verifications to try the core value.

check_endpoint
inspect_security_headers
list_resources (no quota)
verify_claim (5 calls/month)
100 total requests per calendar month for endpoint + security checks
Tracked by Cloudflare client IP in production, or an anonymous client identifier in local/dev
No API key required

Try Free Checks

Paid Plan

9/month

Single subscription unlocks all 7 paid verification tools with unlimited usage. Best for agents that need reliable verification.

Requires X-API-Key (generated after checkout)
Billing must be active via Stripe
5,000 requests per calendar month included
Usage tracked per API key
Includes all 7 paid tools: check_pricing, estimate_market, compare_competitors, compare_pricing_pages, test_hypothesis, assess_compliance_posture, and verify_claim
Unlimited verify_claim calls
Create and run saved monitors with evidence history
Monitor management and generated change reports

How it works: Free tier is for proving the MCP connection. The Paid Plan (9/month) unlocks all 7 paid verification tools with 5,000 included requests per month.

Questions

What is Ground Truth?: Ground Truth is a verification layer for AI agents. Instead of trusting a model to guess once, you give it a way to check live data, save monitors, keep evidence history, and report when important claims change.
What is MCP?: Model Context Protocol is the standard that lets AI apps call external tools. Ground Truth plugs into Claude Desktop, Cursor, and other MCP clients so your agent can verify before it acts.
Do I need an API key for the free check?: No. check_endpoint, inspect_security_headers, and list_resources work immediately with no signup. verify_claim is also free for up to 5 calls per calendar month. No API key required for any free tier tool.
What's included in the Paid Plan?: All 7 paid tools are unlocked with a single 9/month subscription: check_pricing, estimate_market, compare_competitors, compare_pricing_pages, test_hypothesis, assess_compliance_posture, and verify_claim (unlimited).
What happens if I cancel my plan?: Your API key loses paid access immediately. You can still use the free tier for check_endpoint, inspect_security_headers, list_resources, and up to 5 verify_claim calls per month.